Caption: Napalm bombing in the Korean War. US Air Force B-26 Invader bomber (upper left) pulling out of a bombing dive after dropping napalm (lower right) on enemy troops during the Korean War. The bomber's bomb-bay doors are still open. Napalm (here, jellied gasoline) is a flammable liquid that sticks to the skin and causes severe and often fatal burns. The Korean War (1950-1953) was a war between South Korea, backed by United Nations forces led by the USA, and North Korea, backed by the Soviet Union and China. This bombing, carried out in around May 1951, was done in support of UN forces during the spring offensive by the Communists.